Sex is an important part of an intimate relationship. Unfortunately, problems related to sex are very common. Approximately 43% of women have experienced a sexual problem. These problems can be complicated and are arranged into categories of sexual dysfunction. The purpose of this entry is to review the sexual cycle, the types of sexual dysfunction, and discuss approaches to treatment.
The traditional sexual response cycle (above) described by Masters, Johnson, and Kaplan includes: desire (libido), arousal (excitement), plateau (the highest point of sexual excitement and pleasure), orgasm (release of sexual tension), and resolution (latency or return to pre-arousal state). When it comes to sex, men and women respond differently.
In general, men become aroused, develop an erection, and experience one orgasm associated with ejaculation. This is followed by a latency period before they can become aroused again. Women may take longer to become aroused, which is often demonstrated by vaginal lubrication, but they can experience multiple orgasms during sex with a shorter latency phase.
In 2001, Dr. Rosemary Basson described an intimacy-based sexual response cycle (below) in order to account for the multiple factors that affect women’s desire to have sex. In this model, a woman’s sexual arousal and desire are affected by emotional and physical satisfaction from interactions with her
partner. Once a woman feels secure, she can develop emotional intimacy and be open to sexual stimulation.
Sexual dysfunction is a disruption of the normal sexual cycle. There are four categories: desire, arousal, orgasmic, and pain disorders. Each category represents a component of the sexual cycle that can be affected. The causes of these disorders are multi-factorial, meaning that they arise from any combination physical and emotional interactions. Women can experience more than one type of disorder from one or more categories.
Sexual desire disorders
There are two types of desire disorders. Hypoactive sexual desire disorder is characterized by no or low interest or desire in sex. This is often referred to as “low libido,” and it is the most common form of sexual dysfunction. Women with sexual aversion disorder avoid sex or genital contact with their partner.
Sexual arousal disorder
Women with arousal dysfunction may have adequate interest in sex, but they are unable to maintain adequate vaginal lubrication or genital swelling in response to sexual stimulation.
Sexual orgasmic disorder
Orgasmic disorder results in a delay of or inability to have an orgasm after a normal excitement phase.
Sexual pain disorders
There are three types of sexual pain disorders: dyspareunia, vaginismus, and noncoital. Dyspareunia describes pain during intercourse. This can occur during initial insertion or with deep penetration. Vaginismus describes involuntary contractions of the vaginal muscles making penetration uncomfortable. Noncoital sexual pain disorder or vestibulitis is characterized by pain with any touching of the outer vagina. Sexual pain disorders can isolate a woman from her partner, because she is unable to experience sex without pain.
Despite the difficulty in determining the causes of these disorders, there are identified risk factors. Medical conditions that can contribute to sexual dysfunction are depression, heart disease, hypothyroidism, diabetes, and estrogen deficiency. In addition, medications for the treatment of depression, high blood pressure, high cholesterol, epilepsy, and chronic pain can affect sexual function.
During a women’s lifetime, she can have periods of increased problems with sex, such as: pregnancy loss, difficulty becoming pregnant, or menopause. Regardless of age and good health, stress can affect sexual relationships. A woman’s desire for sexual intimacy is strongly affected by: conflict with a partner; her partner’s health; prior physical, sexual, or emotional abuse; substance abuse; and cultural or religious expectations.
Sexual disorders affect many couples. Although this discussion is focused on the female patient, both men and women can experience sexual dysfunction. It is important to speak to your physician concerning any symptoms you may have, especially if they are affecting your relationship or wellbeing. In order to determine the type and appropriate treatment for sexual dysfunction, your physician will need to take a thorough history and perform an examination. Outside of a medical exam, women with a sexual disorder should consider speaking to a counselor or therapist with training in sexual dysfunction.
by: Gweneth Lazenby, M.D.
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